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530123886 = 233172919913
BaseRepresentation
bin11111100110010…
…000110001101110
31100221112002021000
4133212100301232
52041202431021
6124334221130
716064656455
oct3746206156
91327462230
10530123886
11252271a16
121296547a6
1385aa1596
1450597b9c
1531818b26
hex1f990c6e

530123886 has 64 divisors (see below), whose sum is σ = 1290427200. Its totient is φ = 160570368.

The previous prime is 530123879. The next prime is 530123897. The reversal of 530123886 is 688321035.

530123886 is a `hidden beast` number, since 530 + 12 + 38 + 86 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 530123886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16666 + ... + 36578.

It is an arithmetic number, because the mean of its divisors is an integer number (20162925).

Almost surely, 2530123886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 530123886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645213600).

530123886 is an abundant number, since it is smaller than the sum of its proper divisors (760303314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

530123886 is a wasteful number, since it uses less digits than its factorization.

530123886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19970 (or 19964 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 530123886 is about 23024.4193412125. The cubic root of 530123886 is about 809.3302831861.

The spelling of 530123886 in words is "five hundred thirty million, one hundred twenty-three thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 9 17 18 27 29 34 51 54 58 87 102 153 174 261 306 459 493 522 783 918 986 1479 1566 2958 4437 8874 13311 19913 26622 39826 59739 119478 179217 338521 358434 537651 577477 677042 1015563 1075302 1154954 1732431 2031126 3046689 3464862 5197293 6093378 9140067 9817109 10394586 15591879 18280134 19634218 29451327 31183758 58902654 88353981 176707962 265061943 530123886